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Operation method of communication node in communication network

a communication network and communication node technology, applied in the direction of wireless network protocols, network traffic/resource management, electrical equipment, etc., can solve the problems of heavy installation and operation cost burden on mobile communication operators, limitations of c-ran structure based on fronthaul interface such as the conventional cpri, and difficulty in formation of midhauls, so as to maximize the centralized c-ran structure

Active Publication Date: 2020-02-04
ELECTRONICS & TELECOMM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008]Accordingly, embodiments of the present disclosure provide an operation method of a communication node for efficiently satisfying functional split requirements while supporting functional split of a base station in a communication network.
[0026]According to the embodiments of the present disclosure, it is made possible to support a CPRI-based fronthaul in the C-RAN structure and a midhaul according to functional split of a base station in a higher layer than the CPRI in a protocol stack, so that the advantages of the centralized C-RAN structure can be maximized.

Problems solved by technology

However, the increase of the number of base stations may cause heavy installation and operation cost burdens on mobile communication operators.
Meanwhile, research on fifth generation (5G) mobile communications has been progressing actively, and limitations of the C-RAN structure based on the fronthaul interface such as the conventional CPRI have appeared.
However, there is a problem that it is difficult for the midhaul formed using the packet-switching based network to support the CPRI-based C-RAN structure.

Method used

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  • Operation method of communication node in communication network
  • Operation method of communication node in communication network
  • Operation method of communication node in communication network

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first embodiment

[0056]FIG. 1 is a conceptual diagram illustrating a first embodiment in which functions of a base station are divided in a communication network.

[0057]Referring to FIG. 1, a base station in a communication network may include a base band unit (BBU) 1 and a remote radio head (RRH) 2 for performing a plurality of divided functions. For example, the BBU 1 may support a PDCP function 10, an RLC function 20, and a MAC function 30 among the plurality of divided functions of the base station. Also, the BBU 1 may further support at least one of a PHY function 40-1 among PHY functions of the base station. Also, the RRH 2 may support at least one a PHY function 40-2 that is not supported by the BBU 1.

[0058]That is, the BBU 1 and the RRH 2 may support a PHY function that is not supported by each other among the PHY functions of the base station. Here, the PHY function performed in the BBU 1 and the PHY function performed in the RRH 2 may mean functions divided from the PHY functions of the bas...

second embodiment

[0060]FIG. 2 is a conceptual diagram illustrating a second embodiment in which functions of a base station are divided in a communication network.

[0061]Referring to FIG. 2, a base station in a communication network may include a centralized unit (CU) 100 and at least one distributed unit (DU) 200 for performing a plurality of divided functions. For example, the CU 100 may support the PDCP function 10 among the plurality of divided functions of the base station. Also, the DU 200 may further support the RLC function 20, the MAC function 30, and the PHY functions 40.

[0062]As such, the divided functions of the base station may be supported by the CU 100 and the DU 200. Here, a network section between the CU 100 and the DU 200 may be defined as a ‘midhaul’. Thus, in the following description, the midhaul may have the same meaning as a midhaul network.

[0063]As described above, the plurality of divided functions of the base station in the communication network may be supported or performed...

third embodiment

[0094]Hereinafter, with reference to FIG. 7, a method of dividing functions of a base station in a communication network according to the present disclosure will be described.

[0095]FIG. 7 is a flowchart for explaining an operation method of a communication node in a communication network according to a third embodiment of the present disclosure.

[0096]Referring to FIG. 7, an environment of a communication network according to a third embodiment of the present disclosure may be the same as the environments of the communication network described in FIG. 4 and the communication network according to the second embodiment. That is, the communication network according to the third embodiment of the present disclosure may be the same communication network as the communication network according to the first embodiment and the communication network according to the second embodiment.

[0097]In FIG. 7, it may be assumed that a first communication node supports the RLC function and the MAC functi...

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Abstract

An operation method of a first communication node in a communication network, which supports a radio link control (RLC) function among functions of a base station, may comprise receiving a first message from a second communication node supporting a packet data convergence protocol (PDCP) function among the functions of the base station; processing the received first message by performing the RLC function; and transmitting the processed first message to a third communication node supporting a medium access control (MAC) function and physical (PHY) functions among the functions of the base station.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims priority to Korean Patent Application No. 10-2017-0018845 filed on Feb. 10, 2017 in the Korean Intellectual Property Office (KIPO), the entire contents of which are hereby incorporated by reference.BACKGROUND1. Technical Field[0002]The present disclosure relates to an operation method of a communication node in a communication network, and more specifically, to an operation method of a communication node for supporting functional split of a base station in a communication network.2. Related Art[0003]In order to support rapidly increasing traffic in a mobile communication environment, the number of base stations is rapidly increasing. However, the increase of the number of base stations may cause heavy installation and operation cost burdens on mobile communication operators. Accordingly, in a recent mobile communication environment, a method of dividing functional elements of a base station based on a centralized (...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H04W28/06H04W72/04H04W88/04H04W72/12H04W80/02
CPCH04W72/0426H04W28/065H04W72/1278H04W88/04H04W80/02H04W88/085H04W24/02H04B1/38H04W72/20H04W72/27
Inventor CHO, SEUNG KWONKIM, WON IKBAEK, SEUNG KWONSONG, JAE SU
Owner ELECTRONICS & TELECOMM RES INST
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